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Reports <code>for</code> or <code>while</code> statements whose
bodies are guaranteed to execute at most once. While such statements could be written intentionally, they
are usually a symptom of error.
<p><b>Example:</b></p>
<pre>
<code>
  for (int i in 0..&lt;10) {
    return
  }
</code>
</pre>
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